Pure lactic acid is a colorless liquid, is a colorless to pale yellow liquid. Odorless, hygroscopic. The relative density of 1.2060 (25/4 ℃). Melting point 18 ℃. Boiling point 122 ℃ (2kPa). Refractive index nD (20 ℃) ??1.4392. With water, ethanol, glycerin, insoluble in chloroform, carbon disulfide and petroleum ether. Heating under normal pressure, concentrated to 50%, part of the anhydride into milk, thus products often contain 10% -15% of the milk anhydride.
2013年7月23日星期二
≠ yogurt lactic acid bacteria beverage
Yogurt and lactic acid drinks are very different, lactic acid powder must pay attention to when choosing distinction. Fresh milk, yogurt is added after sterilization by acid (eg citric acid or lactic acid) prepared from, or through the fermentation of dairy lactobacilli. Acidified milk, not only in the original milk nutrients are not destroyed, and because milk casein clot much smaller, but also improve the baby yogurt stomach acidity, so the baby's hydration absorb more favorable.buffered lactic acid, indicated in its composition, although it also contains lactic acid bacteria, milk, etc., which in practice only a small amount of milk, wherein the protein, fat, iron and vitamin levels were much lower than milk. Eat a lot of lactic acid bacteria beverage iced it will affect the appetite, so that children do not want to eat dinner. Protein content of lactic acid bacteria beverage and only 1%. Therefore, from the point of view nutritional value, far less yogurt lactic acid bacteria beverage, definitely not with lactic acid bacteria drinks instead of milk, yogurt feeding the baby, or likely to cause malnutrition.
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